Railway or tramway rail.



No. 767,729. PATBNTED AUG. 16, 1904.

I J. BIGWOOD.

RAILWAY 0R TRAMWAY RAIL.

APPLICATION FILED MAR. 19. 1904.

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No. 767,729. 'PATENTED' AUG. 16, 1904. J. BIGWOOD.

RAILWAY 0R TRAMWAY RAIL.

APPLICATION rum) MAR. 19. 1904. no IonnL. 2 sums-sum z.

I w l ll L MWK M UNITED STATES Patented August 16, 1904.

PATENT OFFICE.

RAILWAY OR TRAMWAY RAIL.

SPECIFICATION forming part of Letters Patent No. 767,729, dated August 16, 1904. Application filed March 19 1904. Serial No- 198,8'73. (No model.)

To (Ll/1 whom it may concern.-

Be it known that I, JOSHUA BIewooD. engineer, a subject of the King of Great Britain and Ireland, residing at '9 Brighton Terrace, Merridale Road, Wolverhampton, England, have invented certain new and useful Improvements in and Relating to Railway or Tramway Rails, of which the following is a specification, for which I have applied for a patent in Great Britain, filed December 21, 1903, No. 28,032.

It has been suggested to make railway or tramway rails of two parts, a supportinggirder and the surface, hereinafter called the rail proper.

My invention relates toa rail of this kind in which the under surface of the rail proper has a longitudinal rib which fits more or less closely into a corresponding longitudinal groove in the upper surface of the girder.

The accompanying drawings illustrate my invention.

Figures 1 and 2 are a side elevation and a cross-section, respectively, of a tramway-rail having my improvement. Figs. 3 and 4 are like views, respectively, of a modification.

Like letters indicate like parts in all the figures.

Referring to Figs. 1 and 2, the rail proper, a, has flanges 6, whereby it is bolted by bolts 0 to the upper flanges d of the I-girder e. The latter may be fastened by any suitable means to a transverse sleeper, but is here shown kept in place on an iron sleeper f, having tongues 9 cut out of it and bent over the lower flanges h of the girder. The rail proper,

a, is made with a longitudinal rib i on its under surface, and the web of the girder e is made thicker at its upper part to allow of the formation of a groove 70 in the upper surface of the girder, in which groove the rib 2' fits when the rail proper is in place.

In Figs. 3 and 4 the rail proper, a, is made without flanges and is fastened to the girder e by bolts 0, which pass through the rib on the under surface of the rail proper and through the enlarged upper part of the web of the girder.

As in previous rails constructed of two parts in this manner, the position of the rail proper on the girder is such that the crushing strain acts vertically on the web of the girder.

The rails and girders which constitute a line of rails are preferably made to break joint, as will be seen by reference to Figs. 1 and 3.

Having now described the nature of my said invention and the best means I know of carrying the same into practical effect, I claim 1. A rail consisting of a girder of substantially H-section having a longitudinal groove, a rail proper supported on the girder having a longitudinal rib taking into the groove in the girder and flat bearing-surfaces resting on the upper flanges of the girder, and means for securing the rail proper in position on the girder; substantially as described.

2. A rail consisting of a rail proper, a girder supporting said rail, the web of said girder being disposed vertically below the runningsurface of said rail, a longitudinal groove on the upper side of the girder, a longitudinal rib 0n the under side of the rail taking into said groove on thegirder, and means for securing the rail in position on the girder, substantially as described.

In testimony whereofI have signed my name to this specification in the presence of two subscribing witnesses.

J. BIGWVOOD.

Witnesses:

MARTIN ALDERWICK, HAROLD VILLIERS PEDLEY. 

